Bid noted. As for values: I mainly go after scoob's price guide here. PnB skillers are listed as Pul - HR (40 - 120). Obviously, I try to get the highest value. +6 life may not be much, but enough for me to not sell it for Pul. +10-19 life as second mod basically doubles the price, so I try to get 160 - 240 out of it.80 for the lower P&B GC then.
+80 value is too high for 6 extra life, in my opinion.